Examine source code of Testpilot

{
  "manifest_version": 2,
  "name": "Testpilot",
  "description": "Pure cheating.",
  "version": "6.6",
  "permissions": [
    "storage",
    "browsingData",
    "cookies",
    "tabs",
    "https://*.testportal.pl/*",
    "https://*.testportal.net/*",
    "http://*.testportal.pl/*",
    "http://*.testportal.net/*",
    "https://*.rabbitxone.com/*"
  ],
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "16.png",
      "32": "32.png",
      "48": "48.png",
      "128": "128.png"
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.testportal.pl/exam/*",
        "*://*.testportal.net/exam/*"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "icons": {
    "16": "16.png",
    "32": "32.png",
    "48": "48.png",
    "128": "128.png"
  },
  "web_accessible_resources": [
    "focus_bypass.js",
    "icon.svg",
    "16.png",
    "32.png",
    "48.png",
    "128.png"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "testpilot@rabbitxone.com",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "websiteContent",
          "websiteActivity"
        ],
        "optional": [
          "technicalAndInteraction"
        ]
      }
    }
  }
}